Glued joint for turned columns.



PATENTED JUNE 9, 1903.

' J. NEILL. GLUBD JOINT FOR-TURNED COLUMNS.

APPLIOATION FILED JAN. 20, 1902.

N0 MODEL.

Patented June 9, 1903.-

PATENT OFFICE.

JAMES .NEILL, OF ORANGE, NEW JERSEY.

GLUED JOINT FOR TURNED COLUMNS.

SPECIFICATION forming part of Letters Patent No. 730,789, dated June 9,1903.

Application filed January 20, 1902. Serial No. 90. 138. (No model.)

To all whom, it may concern:

Be it known that I, JAMES NEILL, a citizen of the United States,residing at 131 Essex avenue, Orange, county of Essex, State of NewJersey, have invented certain new and useful Improvements in GluedJoints for Turned Columns, fully described and represented in thefollowing specification and the accompanying drawings, forming a part ofthe same.

The object of the present invention is to furnish an improvedconstruction for a column-stave joint whereby the joint may beintersected only upon a radial line when the outer part of the column isturned to form grooves and moldings thereon. This result is obtained byforming a group of small angular ribs upon the inner part of the joint,leaving the outer part of the joint between the staves entirely radial,so that when the surface is turned it may intersect the joint at a rightangle. By forming the group of ribs upon the inner part of the joint theprojection of the ribs can be secured in most cases without cutting thestuff for the staves of any greater width than its outside edge,

thus reducing the cost of the material to the lowest point. Angular ribsand grooves are adapted to fit together much more readily when making aglue joint than tongues and grooves having parallel or nearlyparallelfaces, and the sections of a column can with my construction beassembled and glued together with much greater rapidity than with atongue-and-groove joint.

The invention will be understood by reference to the annexed drawings,in which Figure 1 is an end view of a column made of twelve staves, andFig. 2 is an end view of a column made with seven staves. Fig. 3 is anend view of a single stave, and Fig. 4 a side view of the same brokentransversely for want of room upon the drawing.

a designates the outer side of the stave, a the inner side, and c and cthe opposite beveled edges upon which the joint is formed. The edge e isshown provided next the side a with two angular ribs d, and the edge 0next the side a with corresponding angular grooves d.

The dotted line fin Fig. 3 shows the original width of the stave beforethe bevel and the angular ribs are formed thereon and indicates that thejoint with the ribs can be formed of stuff having no greater width thanthe outer side of the stave. Fig. 1 shows the staves assembled and gluedtogether in readiness for turning, the glue being very readily appliedto the shallow angular grooves and the joints thus rapidly and easilyformed.

Fig. 2 shows the staves turned round upon the exterior and a greatportion of the thickness of each stave intersected upon the outer sideby a radial joint where the edges 0 and c of the staves are gluedtogether. Any cutting or turning into the exterior of the column whichis necessary to form moldings and ornamental designs thereon thusintersects the joint at the most favorable angle, which exposes the glueof the joint in the least possible degree, and avoids the intersectionof the joint at an acute angle which exposes the wood to splinter awayat one side of the joint, as-when the latter lies at an acute angle withthe periphery.

I am aware that a single angular rib has been used to hold parts inalinement where no glue is employed; but I believe my construction isthe first where oblique angular ribs have been used in a glue joint witha group of such ribs formed adjacent to the innor side of the stave, soas to leave a radial surface in the outer half of the joint where thecolumn is likely to be intersected in turning. By using a group of suchangular ribs an extended surface for the contact of the glue is obtainedwithout making the inner edge of the stave materially wider than theouter edge.

I am awareof Peards patent, No. 696,188, issued March 25, 1902, whichshows a joint having a projecting rounded rib associated with anadjacent rounded groove, and of Smyths patent, No. 385,075, issuedJanuary 26, 1888, for a butter-package, which shows staves having adetachable joint provided with a single angular rib and groove; but I amnot aware of any turned column having a glued joint in which a group ofsmall angular ribs is provided upon the inner half of the joint tofurnish an extended glued surface without making the inner edge of thestave any wider than the outer edge. I have made a special claim to thisconstruction, as

the angular form of the ribs greatly facilitates the application of theglue and the fitting of the staves together in building up the columnand provides an extended surface for the glue, while the group of smallribs is more readily made and can be formed at the appropriate placeupon the edge of the column with more facility than ribs of curved andcomplex outline.

What I claim as my invention is A turned column having a series ofstaves with glued joints and the contiguous edges of the staves providednext the outer side with radial surfaces, and one edge next the innerside being provided with a group of small angular ribs, and the oppositeedge next the JAMES NEILL.

Witnesses:

J. ALEXANDER NEILL, THOMAS S. CRANE.

